The AccuSharp Knife and Tool Sharpener is a ‘best in class’ all-purpose sharpener that is both affordable and well made. Designed and manufactured in the USA, it offers reversible blades for longer life and is easier to use than many other more complicated products. You will be hard-pressed to find a sharpener that is as versatile as the AccuSharp.
I paid £9:95 for mine just before, so the price obviously fluctuates according to demand,
although i'm yet to use this,i've read up on reviews and watched youtube demonstrations on it, and it seems impressive and simple to use.